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Table 2 Test-retest reliability of the Revised Fibromyalgia Impact Questionnaire total, dimensions, and individual items scores

From: Validation of a Spanish version of the Revised Fibromyalgia Impact Questionnaire (FIQR)

 

Visit 1 (mean ± SD)

Visit 2 (mean ± SD)

ICC (95% CI)

FIQR total

68.2 ± 17.5

67.4 ± 19.9

0.82 (0.75 to 0.87)

FIQR function

18.9 ± 6.7

19.2 ± 6.8

0.73 (0.63 to 0.80)

 Comb hair

4.48 ± 2.9

4.56 ± 3.1

0.72 (0.62 to 0.80)

 Walk for 20 minutes

5.70 ± 3.4

5.75 ± 3.5

0.74 (0.64 to 0.81)

 Prepare a meal

4.57 ± 3.0

5.22 ± 3.1

0.66 (0.54 to 0.75)

 Clean floors

6.90 ± 2.8

7.16 ± 2.7

0.60 (0.47 to 0.71)

 Carry a bag of groceries

8.23 ± 6.4

7.59 ± 2.7

0.19 (0.01 to 0.36)

 Climb a flight of stairs

7.16 ± 2.6

7.25 ± 2.8

0.70 (0.60 to 0.79)

 Change bed sheets

6.73 ± 2.5

6.66 ± 2.6

0.74 (0.65 to 0.82)

 Sit for 45 minutes

6.74 ± 2.8

6.72 ± 2.9

0.70 (0.59 to 0.78)

 Go shopping for groceries

6.36 ± 2.8

6.81 ± 2.6

0.73 (0.63 to 0.81)

FIQR overall impact

11.8 ± 5.6

12.0 ± 5.9

0.51 (0.36 to 0.63)

 Can not achieve goals

5.91 ± 2.9

5.98 ± 3.0

0.59 (0.45 to 0.69)

 Feel overwhelmed

5.88 ± 3.3

6.05 ± 3.1

0.37 (0.20 to 0.52)

FIQR symptoms

37.5 ± 8.7

36.1 ± 9.6

0.81 (0.73 to 0.87)

 Pain rating

7.73 ± 2.2

7.65 ± 2.2

0.64 (0.52 to 0.74)

 Energy rating

7.73 ± 2.3

7.72 ± 2.2

0.63 (0.50 to 0.73)

 Stiffness rating

7.39 ± 2.2

6.91 ± 2.6

0.69 (0.57 to 0.78)

 Sleep quality

8.62 ± 2.1

8.26 ± 2.1

0.52 (0.38 to 0.64)

 Depression level

6.54 ± 3.2

6.47 ± 3.2

0.87 (0.82 to 0.91)

 Memory problems

7.53 ± 2.5

7.14 ± 2.5

0.78 (0.69 to 0.84)

 Anxiety level

7.18 ± 2.8

6.71 ± 2.9

0.80 (0.72 to 0.86)

 Tenderness level

7.43 ± 2.7

7.28 ± 2.9

0.76 (0.68 to 0.83)

 Balance problems

6.95 ± 2.5

6.49 ± 2.5

0.70 (0.59 to 0.79)

 Environmental sensitivity

8.02 ± 2.2

7.67 ± 2.3

0.71 (0.61 to 0.80)

  1. SD Standard Deviation, ICC intraclass correlation coefficient, 95% CI 95% confidence interval, FIQR Fibromyalgia Impact Questionnaire Revised.